A vertical packaging machine and its belt tension adjusting device

Abstract

The present invention discloses a belt tension adjusting device for a packaging machine. It includes a belt fixing part and a tension adjusting part which are connected to each other; wherein, the belt fixing part includes a belt, pressing plate A, pressing plate B and an adjusting rod. The belt is U-shaped around the adjusting rod, and then the two layers at the opening of the belt are clamped by pressing plate A and pressing plate B, and the four corners of pressing plate A and pressing plate B are fixed with bolts to completely lock and fix the belt to prevent loosening; holes are also provided at both ends of the adjusting rod for the adjusting bolts to pass through. The present invention develops a belt tension adjusting device on the basis of the open-loop belt connection and fixation. When the belt connection and fixation are completed, this device can realize the function of belt tension adjustment; the structure of the present invention is simple, the function integration degree is high, effectively improving the convenience of belt tension adjustment, which is an effective supplement to the open-loop belt connection and fixation; reducing labor intensity and improving work efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of packaging machines, and relates to a vertical packaging machine and a belt tensioning and adjusting device thereof, in particular to a belt connection fixing and tensioning and adjusting device with a reciprocating transmission form using a belt as a transmission medium. Background Art

[0002] In the field of transmission technology, belt drive, as an economical, green and convenient transmission form, has become a common choice in the industry. Especially in equipment system automation with low pollution, low noise, compact space and fast production rhythm, there are disadvantages of slow belt tensioning and adjusting speed and low precision. A belt tensioning and adjusting device is needed to solve such problems.

[0003] In the prior art, there are many horizontal packaging machines, but they are not suitable for packaging relatively tall goods. Existing vertical packaging machines are generally swing-arm packaging machines. However, when the vertical swing arm rotates around the goods, the stability is insufficient and cannot meet the use requirements. Moreover, it occupies a large area and has low working efficiency. When packaging, it can only package 2 layers from bottom to top and then from top to bottom, and cannot package at a specified position. The turntable-type packaging machine placed on the ground also has low working efficiency. When packaging, it can only package 2 layers from bottom to top and then from top to bottom, and cannot package at a specified position, and cannot meet the user's needs. Summary of the Invention

[0004] In order to make up for the deficiency that the belt cannot be tensioned and maintained after being connected and fixed in the prior art, the present invention provides a vertical packaging machine and a belt tensioning and adjusting device thereof, realizing the tensioning and adjusting function of belt drive.

[0005] The present invention is realized through the following technical solutions:

[0006] A belt tensioning and adjusting device for a packaging machine, characterized in that: it includes a belt fixing part and a tensioning and adjusting part connected to each other; wherein, the belt fixing part includes a belt, pressing plate A, pressing plate B and an adjusting rod. The belt is U-shaped around the adjusting rod, and then the two layers at the opening of the belt are clamped by pressing plate A and pressing plate B, and the four corners of pressing plate A and pressing plate B are fixed with bolts to completely lock and fix the belt and prevent loosening; both pressing plate A and pressing plate B are provided with male and female grooves, the male groove of pressing plate A corresponds to the female groove of pressing plate B, and the female groove of pressing plate A corresponds to the male groove of pressing plate B.

[0007] The tensioning and adjusting part includes a connecting piece and the adjusting bolt. The adjusting bolt connects the adjusting rod and the connecting piece together, and realizes the function of adjusting and tensioning the belt by adjusting the distance between the adjusting rod and the connecting piece.

[0008] Shoulders are provided on both sides of the adjusting rod where the belt is located to prevent the axial movement of the adjusting rod. The two ends and the middle of the adjusting rod are on the same axis.

[0009] A vertical packaging machine, characterized in that: it includes a frame, a rotating ring lifting hanger installed on the frame, a horizontal rotating ring installed on the rotating ring lifting hanger, a film roll installed on the rotating ring, and further includes a film clamping device, a film welding device, and a film cutting device installed on a support frame, and the support frame is installed on the rotating ring lifting hanger. The rotating ring lifting hanger is installed on the frame through several groups of lifting mechanisms to achieve the lifting function.

[0010] The lifting mechanism uses a belt. The upper end of the belt is wound and fixed on a pulley on the transmission shaft. The transmission shaft is connected to a servo motor. The transmission shaft and the servo motor are installed on the top of the frame. The lower end of the belt is connected to the rotating ring lifting hanger through a belt tensioning and adjusting device; a guiding device is installed between the rotating ring lifting hanger and the frame.

[0011] The guiding device includes a vertical guide rail installed under the rotating ring lifting hanger and a guiding wheel installed on the frame, and the guide rail moves up and down along the guiding wheel; or, the guiding device includes a vertical guide rail installed on the frame and a guiding wheel installed on the rotating ring lifting hanger, and the guiding wheel moves up and down along the guide rail.

[0012] The film roll is installed on the rotating ring through a film rack, and a device for releasing the packaging film is installed on the film rack; a contactor and a sliding contact wire are installed on the rotating ring, which can supply power to the device for releasing the packaging film. A protective net is installed outside the frame.

[0013] The upper end surface of the rotating ring adopts a circular flat plate, and a vertical surface is fixed under the upper end surface of the rotating ring. The vertical surface is cylindrical; a small supporting wheel is installed on the rotating ring lifting hanger through a bracket one, and a large supporting wheel is installed on the rotating ring lifting hanger through a bracket two; the small supporting wheel supports the upper end surface of the rotating ring from below, the circumferential surface of the small supporting wheel contacts the upper end surface of the rotating ring, and the small supporting wheel also presses the upper end surface of the rotating ring from above to make the rotating ring stable in the up and down direction; the circumferential surface of the large supporting wheel contacts the vertical surface of the rotating ring to make the rotating ring stable in the horizontal direction and prevent deviation; a rotating ring driving motor is installed on the rotating ring lifting hanger and is connected to a driving gear or a driving pulley through a transmission device to drive the rotating ring to rotate;

[0014] The rotating ring drives the film roll to rotate around the goods, and the rotating ring moves up or down while rotating and follows the rotating ring lifting hanger, so that the goods are wrapped from bottom to top or from top to bottom.

[0015] The rotating ring driving motor is installed on the rotating ring lifting hanger. The rotating ring driving motor is connected to a driving gear or a driving pulley. A circle of teeth is machined on the outer circumference of a certain place on the rotating ring or it is machined into a pulley, so as to cooperate with the driving gear or the driving pulley to make the rotating ring rotate.

[0016] The beneficial effects of the present invention are as follows: Based on the open-loop belt connection and fixation, a belt tension adjustment device is developed. When the belt connection and fixation are completed, this device can achieve the function of belt tension adjustment; the belt tension adjustment device has a simple structure, is convenient to use, and has a high degree of functional integration, effectively improving the convenience of belt tension adjustment, which is an effective supplement to the open-loop belt connection and fixation; it reduces labor intensity and improves work efficiency.

[0017] The anti-falling device can effectively prevent the swivel ring and the swivel ring lifting hanger from falling, prevent the important components on the swivel ring and the swivel ring lifting hanger from being damaged, prevent the goods from being damaged, and prevent the workers from being injured.

[0018] This vertical packaging machine can package goods of various shapes, has high working efficiency and high automation degree, and effectively saves labor. Moreover, this equipment occupies a small area and has a compact structure. This equipment can separately wind and package the specified height positions at the lower, middle or upper parts of the goods, and can also wind and package the goods comprehensively from bottom to top and then from top to bottom. Separately packaging at the specified height can meet the packaging process requirements of different goods and save packaging costs. It overcomes the problem that the general winding machine can only package in two layers from bottom to top and then from top to bottom. Brief Description of the Drawings

[0019] Figure 1 、 Figure 2 are respectively the front view and the left view schematic diagrams of the belt tension adjustment device of the present invention, Figure 3 、 Figure 4 are respectively the front view and the left view schematic diagrams of the belt fixing part, Figure 5 、 Figure 6 are respectively the front view and the left view schematic diagrams of the tension adjustment part.

[0020] Figure 7 、 Figure 8 、 Figure 9 are respectively the front view, the top view and the left view schematic diagrams of the packaging machine. Figure 10 、 Figure 11 are respectively the partial front view and the partial left view schematic diagrams of the packaging machine. Figure 12 is Figure 7 the partial enlarged schematic diagram of, Figure 13 is Figure 9 the partial enlarged schematic diagram of.

[0021] Figure 14 、 15 、16 are respectively the front view, the top view and the left view of the anti-falling device.

[0022] In the figure: 101, belt fixing part; 102, tensioning and adjusting part; 9, belt; 104, pressing plate A; 105, pressing plate B; 106, adjusting rod; 107, bolt; 108, connecting piece; 109, adjusting bolt; 110, shaft shoulder; 111, supporting pulley.

[0023] 1, frame; 2, film frame; 3, film cutting device; 4, swivel; 5, protective net; 6, deceleration servo motor; 7, transmission shaft; 8, pulley; 9, belt; 10, upper mounting frame; 11, leg; 12, drag chain; 13, anti-falling device; 14, guide pulley; 15, swivel lifting hanger; 16, large supporting pulley; 17, swivel drive motor; 18, sliding contact wire; 19, contactor; 20, small supporting pulley; 21, swivel belt pulley; 22, movable frame; 23, film clamping device; 24, film welding device; 25, film welding baffle; 26, swing arm; 27, rubber roller; 28, guide roller; 29, pinion; 30, large gear; 31, film pressing device; 32, film roll; 33, belt tensioning and adjusting device; 34, guide rail; 35, upper end face of swivel; 36, vertical face.

[0024] 201, hook plate; 202, hook plate connecting plate; 203, tension spring; 204, mounting frame; 205, connecting plate; 206, hook plate connecting shaft; 207, elastic washer; 208, screw; 209, bolt; 210, washer; 211, nut; 212, screw; 213, follower shaft; 214, end cover; 215, washer; 216, hook tip; 217, ladder-shaped frame; 218, small cross bar; 219, L-shaped plate; 220, rib plate; 221, back plate; 222, small hook. Specific embodiments

[0025] The accompanying drawings show a specific embodiment of the present invention.

[0026] The vertical packaging machine of the present invention includes a frame 1, a swivel lifting hanger 15 installed on the frame, a horizontal swivel 4 installed on the swivel lifting hanger, and a film roll 32 installed on the swivel. It further includes a film clamping device 23, a film welding device 24, and a film cutting device 3 installed on a support frame, and the support frame is installed on the swivel lifting hanger. The swivel lifting hanger 15 is installed on the frame through a plurality of sets of lifting mechanisms to achieve the lifting function.

[0027] The lifting mechanism uses a belt 9. The upper end of the belt is wound and fixed on the pulley 8 on the transmission shaft 7. The transmission shaft is connected to the servo motor 6. The transmission shaft and the servo motor are installed at the top of the frame. The lower end of the belt is connected to the swivel lifting hanger 15 through a belt tensioning and adjusting device 33.

[0028] An anti-falling device is connected between the lifting mechanism and the swivel lifting hanger; the anti-falling device includes a hook plate 201, a mounting frame 204, and a connecting plate 205 (the connecting plate 205 is part of the connecting piece 108) installed together;

[0029] The upper end of the connecting plate 205 is connected to the lifting mechanism of the packaging machine;

[0030] At the lower outer end of the hook plate 201, there is a hook tip 216. When the hook plate rotates to the right, the hook tip can catch any small crossbar 218 of the ladder-shaped frame 217 installed on the leg of the frame. A hook plate connecting plate 202 is fixed to the upper end of the hook plate, and a tension spring 203 is connected between the hook plate connecting plate and the upper end of the mounting frame 204;

[0031] The mounting frame includes an L-shaped plate 219, a rib plate 220, and two back plates 221 welded together. The L-shaped plate is connected to the lifting hanger of the sling of the packaging machine below. There is an arc-shaped long hole M centered on the center of the hole a on the back plate.

[0032] At point a, that is, at the hole a of the back plate 221 of the mounting frame 204, the back plate 221 and the hook plate 201 are connected together by a bolt 209. The bolt 209 can serve as the rotating shaft of the hook plate 201;

[0033] At point b, the back plate 221 of the mounting frame, the hook plate 201, and the connecting plate 205 are connected together by a follower shaft 213 and a screw 212. The follower shaft 213 is located in the long hole M of the back plate and can slide along the long hole M;

[0034] At point c, the left and right hook plates 201 are connected together by a screw 208 and a hook plate connecting shaft 206.

[0035] In the anti-falling device, an alarm switch is also installed at point d on the back plate 221 of the mounting frame 204. The connected alarm is installed on the frame of the packaging machine. There is a small hook 222 on the hook plate. The small hook is located outside the alarm switch. When the hook plate rotates, the small hook touches the alarm switch, triggering the alarm to sound.

[0036] A guiding device is installed between the swivel lifting hanger and the frame. The guiding device includes a vertical guide rail 34 installed below the swivel lifting hanger, and a guide wheel 14 installed on the frame. The guide rail moves up and down along the guide wheel; or, the guiding device includes a vertical guide rail installed on the frame, and a guide wheel installed on the swivel lifting hanger. The guide wheel moves up and down along the guide rail.

[0037] The film roll 32 is installed on the swivel 4 via the film rack 2. A device for releasing the packaging film is installed on the film rack. A contactor 19 and a sliding contact wire 18 are installed on the swivel, which can supply power to the device for releasing the packaging film. A protective net 5 is installed outside the frame.

[0038] The upper end surface 35 of the swivel ring is a circular flat plate, and a vertical surface 36 is fixed below the upper end surface of the swivel ring. The vertical surface is cylindrical. A small supporting wheel 20 is installed on the swivel ring lifting hanger 15 through the first bracket, and a large supporting wheel 16 is installed on the swivel ring lifting hanger through the second bracket. The small supporting wheel supports the upper end surface 35 of the swivel ring from below. The circumferential surface of the small supporting wheel contacts the upper end surface of the swivel ring, and the small supporting wheel also presses the upper end surface of the swivel ring from above to make the swivel ring stable in the up and down directions. The circumferential surface of the large supporting wheel 16 contacts the vertical surface 36 of the swivel ring to make the swivel ring stable in the horizontal direction and prevent deviation. A swivel ring driving motor 17 is installed on the swivel ring lifting hanger and is connected to drive the swivel ring 4 to rotate through a transmission device.

[0039] The swivel ring drives the film-wound goods to rotate, and while rotating, the swivel ring moves up or down following the swivel ring lifting hanger, so that the goods are wound and wrapped from bottom to top or from top to bottom.

[0040] The swivel ring driving motor 17 is installed on the swivel ring lifting hanger 15. The swivel ring driving motor is connected to a driving gear or a driving pulley 21. A circle of teeth is machined on the outer circumference of a certain part of the swivel ring or it is machined into a pulley, so as to cooperate with the driving gear or the driving pulley to make the swivel ring rotate.

[0041] The belt tension adjusting device for the packaging machine of the present invention includes a belt fixing part 101 and a tension adjusting part 102 which are connected to each other. Among them, the belt fixing part 101 includes a belt 9, a pressing plate A 104, a pressing plate B 105 and an adjusting rod 106. The belt 9 is U-shaped around the adjusting rod 106, and then the two layers at the opening of the belt 9 are clamped by the pressing plate A 104 and the pressing plate B 105, and the four corners of the pressing plate A 104 and the pressing plate B 105 are fixed with bolts 107 to completely lock and fix the belt 9 and prevent loosening. Both the pressing plate A 104 and the pressing plate B 105 are provided with male and female notches. The male notch of the pressing plate A 104 corresponds to the female notch of the pressing plate B 105, and the female notch of the pressing plate A 104 corresponds to the male notch of the pressing plate B 105. Both ends of the adjusting rod 106 are also provided with holes for the adjusting bolts 109 to pass through.

[0042] The tension adjusting part 102 includes a connecting piece 108 and the adjusting bolt 109. The adjusting bolt connects the adjusting rod 106 and the connecting piece 108 together, and the function of adjusting the belt tension is realized by adjusting the distance between the adjusting rod and the connecting piece.

[0043] Shoulders 110 are provided on both sides of the belt on the adjusting rod 106 to prevent the axial movement of the adjusting rod 106. Both ends and the middle of the adjusting rod 106 are on the same axis.

[0044] Through holes or threaded holes are respectively provided at the four corners of the pressing plate A 104 and the pressing plate B 105 for installing bolts 107. The holes at both ends of the adjusting rod 106 for the adjusting bolts 109 to pass through are threaded holes or smooth holes.

[0045] The connecting piece 108 is used to connect and fix the swivel lifting hanger 15 of the packaging machine.

[0046] The belt winds around the supporting pulley 111. The supporting pulley acts as a fixed pulley. The upper end of the belt is fixed on the pulley 8 on the transmission shaft 7 and winds a certain length on this pulley. The transmission shaft is connected to the servo motor 6. Several groups of this belt tension adjusting device are installed on the swivel lifting hanger of the packaging machine.

[0047] In the belt tension adjusting device, the belt U-shaped surrounds the adjusting rod. The pressing plates A and B clamp and fix the belt. The belt is then connected to the connecting piece through the adjusting bolt. The connecting piece is connected to the swivel lifting hanger of the packaging machine below. When adjusting the adjusting bolt to tighten the belt, an instrument measures the lengths by which the nuts of the left and right adjusting bolts are screwed down to ensure that the connecting rod of the connecting piece and the adjusting rod are both horizontal.

[0048] When the belt tension adjusting device is in use, when the servo motor rotates forward, the belt continues to wind on the transmission shaft, and the free end of the belt shortens, so that the swivel lifting hanger of the packaging machine rises and drives the horizontal swivel to rise; when the servo motor rotates in reverse, the belt releases a section on the transmission shaft, and the free end of the belt elongates, so that the swivel lifting hanger of the packaging machine descends and drives the horizontal swivel to descend.

[0049] This belt tension adjusting device for the packaging machine is used for a vertical swivel type winding packaging machine and is used to drive the swivel to rise and fall.

[0050] Normally, the tip of the hook plate points downward and does not affect the lifting. When the lifting mechanism breaks and the swivel lifting hanger and the swivel fall, the tip of the hook turns outward and catches any one of the small crossbars on the ladder-shaped frame on the leg of the frame, preventing the swivel lifting hanger from falling further. When the lifting mechanism fails, for example, when the belt breaks, the connecting plate 205 no longer pulls the follower shaft 213 at the upper end of the circular arc-shaped long hole M. The follower shaft 213 gets free. Under the rightward pulling force of the tension spring 203, the upper end of the hook plate turns to the right. The follower shaft 213 moves downward to the lowest end of the long hole M. The tip of the left lower end of the hook plate turns to the left and catches any one of the small crossbars on the ladder-shaped frame on the leg of the frame, and the swivel lifting hanger stops falling.

[0051] The swivel ring of this packaging machine is located in the horizontal plane. When winding and packaging, the swivel ring moves to the uppermost position. The conveyor line delivers the goods to the middle of the swivel ring, and the goods stand upright. The film clamping device clamps the free end of the packaging film. The swivel ring drives the film roll of the packaging film to rotate around the goods in the horizontal plane. When the packaging film wound on the goods presses against its free end, the film clamping device releases the free end of the packaging film. The swivel ring rotates and rises at the same time, winding the goods from the lower end and gradually winding upwards. When the swivel ring and the film roll rise to the top of the goods, the packaging is completed. Or the swivel ring rotates and descends at the same time, first winding and packaging the upper end of the goods, and finally winding and packaging the lower end of the goods. Packaging shells can be pre-placed at the upper and lower ends of the goods. After winding is completed, the film clamping device clamps the part of the packaging film connecting the goods and the film roll, and then the film welding device heats and welds the packaging film on the goods. Finally, the film cutting device heats and burns off the packaging film leaving a margin at the welding point, so that the film roll is separated from the goods. The conveyor line transports the goods away, and the next goods are delivered. The free end of the packaging film on the film roll is clamped by the film clamping device until when winding the next goods, when the packaging film wound on the goods presses against its free end, the film clamping device releases the free end of the packaging film.

[0052] The film clamping device, the film welding device, and the film cutting device all belong to the prior art. The film roll, the film rack, and the device for releasing the packaging film also belong to the prior art and can be directly installed on this vertical packaging machine. The function of the film clamping device is to clamp the free end of the packaging film close to the goods to play the role of feeding the film before packaging the goods, and to clamp the free end of the packaging film on the film roll after packaging is completed.

[0053] The lifting mechanism can also adopt an electric cylinder, a pneumatic cylinder, a hydraulic cylinder, a lead screw-nut pair, or a gear-rack pair. When using an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder, one end of the electric cylinder, pneumatic cylinder, or hydraulic cylinder is connected to the four corners of the swivel ring lifting hanger 15, and the other end is connected to the bottom of the frame leg or the top of the frame. Each electric cylinder is synchronously controlled. When using a lead screw-nut pair, the nut is installed at the four corners of the swivel ring lifting hanger. The upper and lower ends of the lead screw are installed on the frame legs through bearings. The lead screw is connected to a servo motor, and each servo motor is synchronously controlled. When using a gear-rack pair, the upper and lower ends of the rack are installed on the frame legs. The gears are installed at the four corners of the swivel ring lifting hanger 15 through bearings. The gears are connected to servo motors, and the servo motors are also installed at the four corners of the swivel ring lifting hanger. Each servo motor is synchronously controlled. Ring-shaped sliders can be installed at the four corners of the swivel ring. The ring-shaped sliders can be sleeved on the outer sides of the four frame legs. Rollers can be installed inside the sliders, and the rollers are in rolling contact with the legs.

Claims

1. A vertical packaging machine, comprising a frame, a rotating ring lifting hanger installed on the frame, a horizontal rotating ring installed on the rotating ring lifting hanger, a film roll installed on the rotating ring, and further comprising a film clamping device, a film welding device, and a film cutting device installed on a support frame, the support frame being installed on the rotating ring lifting hanger; the rotating ring lifting hanger is installed on the frame through a plurality of sets of lifting mechanisms; characterized in that: A fall prevention device is connected between the lifting mechanism and the rotating ring lifting hanger; the fall prevention device comprises a hook plate, a mounting frame, and a connecting plate installed together; The upper end of the connecting plate is connected to the lifting mechanism of the packaging machine; The lower end of the outer side of the hook plate has a hook tip, and when the hook plate rotates to the right, the hook tip can catch any small cross bar of the ladder-shaped frame installed on the leg of the frame; a hook plate connecting plate is fixed to the upper end of the hook plate, and a tension spring is connected between the hook plate connecting plate and the upper end of the mounting frame; The lower end of the mounting frame is connected to the lifting hanger of the sling of the packaging machine; there is an arc-shaped long hole M centered on the center of the hole a on the back plate of the mounting frame; At point a, that is, at the hole a on the back plate of the mounting frame, the back plate of the mounting frame and the hook plate are connected together by a bolt; the bolt can serve as the rotating shaft of the hook plate; At point b, the back plate of the mounting frame, the hook plate, and the connecting plate are connected together by a follower shaft and a screw, and the follower shaft is located in the long hole M of the back plate of the mounting frame and can slide along the long hole M; At point c, the left and right hook plates are connected together by a screw and a hook plate connecting shaft; In the fall prevention device, an alarm switch is further installed at point d on the back plate of the mounting frame, and the connected alarm is installed on the frame of the packaging machine. There is a small hook on the hook plate, and the small hook is located outside the alarm switch. When the hook plate rotates, the small hook touches the alarm switch, triggering the alarm to sound; Under normal circumstances, the hook tip of the hook plate faces downward and does not affect the lifting; when the lifting mechanism breaks and the rotating ring lifting hanger and the rotating ring fall, the hook tip rotates outward and catches any small cross bar on the ladder-shaped frame on the leg of the frame, preventing the rotating ring lifting hanger from falling further; when the lifting mechanism fails and the belt breaks, the connecting plate 205 no longer pulls the follower shaft 213 at the upper end of the arc-shaped long hole M, and the follower shaft 213 is freed. Under the rightward pulling force of the tension spring 203, the upper end of the hook plate rotates to the right, and the follower shaft 213 moves downward to the lowest end of the long hole M. The hook tip at the lower left end of the hook plate rotates to the left, and the hook tip catches any small cross bar on the ladder-shaped frame on the leg of the frame, and the rotating ring lifting hanger stops falling; The upper end face of the swivel ring is a circular flat plate. A vertical surface is fixed below the upper end face of the swivel ring, and the vertical surface is cylindrical. On the swivel ring lifting hanger, small supporting wheels are installed through support one, and large supporting wheels are installed through support two. The small supporting wheels lift the upper end face of the swivel ring from below. The circumferential surface of the small supporting wheels contacts the upper end face of the swivel ring. The small supporting wheels also press the upper end face of the swivel ring from above, making the swivel ring stable in the up and down directions. The circumferential surface of the large supporting wheels contacts the vertical surface of the swivel ring, making the swivel ring stable in the horizontal direction and preventing deviation. A swivel ring driving motor is installed on the swivel ring lifting hanger and is connected to drive the swivel ring to rotate through a transmission device. The swivel ring drives the film-wound goods to rotate. The swivel ring rotates while moving up or down following the swivel ring lifting hanger, so that the goods are wound and wrapped from bottom to top or from top to bottom.

2. The vertical packaging machine according to claim 1, wherein: The lifting mechanism uses a belt. The upper end of the belt is wound and fixed on a pulley on the transmission shaft. The transmission shaft is connected to a servo motor. The transmission shaft and the servo motor are installed on the top of the frame. The lower end of the belt is connected to the swivel ring lifting hanger through a belt tension adjusting device. A guiding device is installed between the swivel ring lifting hanger and the frame.

3. The vertical packaging machine according to claim 2, wherein: The belt tension adjusting device includes a belt fixing part and a tension adjusting part connected to each other. Among them, the belt fixing part includes a belt, pressing plate A, pressing plate B and an adjusting rod. The belt is U-shaped around the adjusting rod, and then the two layers at the opening of the belt are clamped by pressing plate A and pressing plate B. The four corners of pressing plate A and pressing plate B are fixed with bolts, thus completely locking and fixing the belt. Both pressing plate A and pressing plate B are provided with male and female notches. The male notch of pressing plate A corresponds to the female notch of pressing plate B. The tension adjusting part includes a connecting piece and an adjusting bolt. The adjusting bolt connects the adjusting rod and the connecting piece together, and the function of adjusting and tensioning the belt is realized by adjusting the distance between the adjusting rod and the connecting piece.

4. The vertical packaging machine according to claim 3, characterized in that: In the belt tension adjusting device, shoulders are provided on both sides of the adjusting rod where the belt is located to prevent the axial movement of the adjusting rod. The two ends and the middle of the adjusting rod are on the same axis.

5. The vertical packaging machine according to claim 2, characterized in that: The guiding device includes a vertical guide rail installed below the swivel ring lifting hanger and a guiding wheel installed on the frame. The guide rail moves up and down along the guiding wheel; alternatively, the guiding device includes a vertical guide rail installed on the frame and a guiding wheel installed on the swivel ring lifting hanger. The guiding wheel moves up and down along the guide rail.

6. The vertical packaging machine according to claim 1, wherein: The film roll is installed on the swivel ring through a film rack, and a device for releasing the packaging film is installed on the film rack. A contactor and a sliding contact wire are installed on the swivel ring, which can supply power to the device for releasing the packaging film. A protective net is installed outside the frame.

7. The vertical packaging machine according to claim 1, wherein: The swivel ring driving motor is connected to a driving gear or a driving pulley. A circle of teeth is machined on the outer circumference of a certain part of the swivel ring or it is machined into a pulley, so as to cooperate with the driving gear or the driving pulley to make the swivel ring rotate.

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